Of the millions of Hindu gods, none is more important than Shiva–the great destroyer. Ancient Astronaut theorists suggest this powerful being that possessed flying machines, incredible weapons, and had supernatural abilities may, in fact, have been the leader of an extraterrestrial faction that came to Earth wielding advanced technology.

The U.S. military has long denied that the infamous 1947 Roswell crash was anything other than a weather balloon, but FBI files released in 2011 include a memo to J. Edgar Hoover regarding the recovery of not one, but three "flying saucers." Could the U.S. government really have extraterrestrial crafts in their possession? Ancient Astronaut theorists say yes, and claim that Roswell is just the tip of the iceberg.

Russia is a vast country, spanning over 6 million square miles of some of the most rugged terrain on Earth, much of which is uninhabited and largely unexplored. It is also the home of 'cosmism' – a belief that human civilization originated in the cosmos and is destined to return to space. But many believe the rise of communism led to a wall of secrecy surrounding ancient and modern extraterrestrial contact in Russia. Ancient astronaut theorists suggest that otherworldly visitations predate the establishment of the Russian nation, and point to the ancient settlement at Arkaim as evidence–a centuries-old megalithic site that, like Stonehenge, is oriented along astronomical lines.

Recent archaeological discoveries reveal a very different picture of what life on Earth looked like in the remote past. It was a real-life version of "Lord of the Rings," where humans shared the planet with various different types of intelligent human-like species, such as Neanderthals, Denisovans, and even hobbits. But how is it that these various hominid species developed separately in isolated pockets of the globe? And why does no fossil evidence exist suggesting a slow gradual delineation from a common species?

Ancient Astronaut theorists suggest that evidence of extraterrestrial visitation exists in every corner of the Earth, but some say the most compelling can be found in one of the world's least accessible places–China. China is the cradle to one of mankind's earliest and most influential civilizations. The advents of gunpowder, paper, the compass, and countless other major innovations form the technological base on which our modern societies function. But historically, China has also had a policy of isolationism.

In 2013, former Canadian Minister of Defense, Paul Hellyer, made a shocking claim–that there is a federation of extraterrestrial beings monitoring and guiding humanity. But why would such an esteemed politician make such a controversial announcement? Ancient Astronaut theorists believe evidence can be found throughout history to prove his claims are true. Stories of emperors, kings and pharaohs consulting a pantheon of nine gods can be found in virtually every culture across the globe. Even channeling sessions conducted by CIA scientists in the 1950s connected with an otherworldly group of entities called "The Nine" extraterrestrials here to influence the events on Earth.

The Aborigines of Australia are the oldest, continuously surviving society on Earth. The stories preserved in their oral tradition are said to date back over 60,000 years, to an era they call the "Dreamtime" and contain fascinating descriptions about how life began and our planet was seeded by extraterrestrials. Linguistic experts have just discovered that many of these indigenous legends can be scientifically verified by examining the geological record. Ancient Astronaut theorists propose that if the Aboriginal's oral traditions are indeed this accurate, then perhaps the tales they tell about sky gods visiting Earth in large, fire-spewing crafts are true as well.